This paper describes the REAL REgister ALlocation program. REAL uses a track assignment algorithm taken from channel routing called the Left Edge algorithm. REAL is optimal for non-pipelined designs with no conditional branches. It is thought that REAL is also optimal for designs with conditional branches, pipelined or not. Experimental results are included in the report, which illustrate the optimal solutions found by REAL. REAL is part of the ADAM Advanced Design AutoMation system, and will be used to process designs output from MAHA and Sehwa.

Abstract. In this paper, we describe the implementation of MorphoSys, a reconfigurable processing system targeted at data-parallel and computation-intensive applications. The MorphoSys architecture consists of a reconfigurable component (an array of reconfigurable cells) combined with a RISC control processor and a high bandwidth memory interface. We briefly discuss the system-level model, array architecture, and control processor.Next, we present the detailed design implementation and the various aspects of physical layout of different subblocks of MorphoSys. The physical layout was constrained for 100 MHz operation, with low power consumption, and was implemented using 0.35 m, four metal layer CMOS (3.3 Volts) technology. We provide simulation results for the MorphoSys architecture (based on VHDL model) for some typical data-parallel applications (video compression and automatic target recognition). The results indicate that the MorphoSys system can achieve significantly better performance for most of these applications in comparison with other systems and processors.

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Power-aware systems are those that must make the best use of available power. They subsume traditional low-power systems in that they must not only minimize power when the budget is low, but also deliver higher performance when required. This paper presents a new scheduling technique for supporting the design and evaluation to a class of power-aware systems in mission critical applications. It computes a schedule that satisfies stringent min/max timing and max power constraints at all times. Furthermore, it also makes the best effort to satisfy min power constraint in an attempt to fully utilize free solar power or to control power jitter. Experimental results show that our automated technique yields designs that improve performance and reduce energy cost simultaneously compared to hand-crafted designs used in previous missions. This tool forms the basis of the IMPACCT system-level framework that will enable designers to aggressively explore many more power-performance trade-offs with confidence.